Plant Tissues, Transpiration and Xylem and Phloem Notes

Condensed notes on Plant tissues and Transpiration at Double Award GCSE Biology level. 

HideShow resource information
Preview of Plant Tissues, Transpiration and Xylem and Phloem Notes

First 193 words of the document:

Plant Tissues
Epidermal tissue: covers the plant
Palisade Mesophyll: carries out
photosynthesis
Spongy Mesophyll: had air gaps to facilitate
the diffusion of gases
Xylem and Phloem: transport substances
around the plant
Xylem
· Involved in conduct of water and solutes
from ROOTS > LEAVES transpiration
Phloem
· Involved in transport of sucrose, other
organic compounds, and some ions (ie food)
from LEAVES > REST OF PLANT
translocation
Transpirationis the process by which water evaporates from
the leaves, which results in more water being drawn up from the
roots. (against gravity) So in short:
*Water is absorbed from the soilby root hair cells
* It is then transported through the xylem vessels up the stem t othe leaves
*Water evaporates from the leaves
Xylem and phloem - Higher tier
Xylem vessels consist of dead cells. They have a thick,
strengthened cellulose cell wall with a hollow lumen .
On the other hand, phloemconsists of columns of living
cells.
Diagram showing the cross sections of a xylem and a phloem

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all resources »